Home / 143,338.28-197,828.42-103,185

Finding the Fourth Proportional to 143,338.28, 197,828.42 and 103,185

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Solution

The fourth proportional to 143,338.28, 197,828.42 and 103,185 is: 142,410.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,338.28 : 197,828.42 = 103,185 : x
  2. Step 2: Convert to fraction form
    143,338.28/197,828.42 = 103,185/x
  3. Step 3: Cross multiply
    143,338.28x = 197,828.42 × 103,185
  4. Step 4: Simplify right side
    143,338.28x = 20,412,925,517.70
  5. Step 5: Solve for x
    x = 20,412,925,517.70/143,338.28
  6. Step 6: Final answer
    x = 142,410.84

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.